SIFT Feature matches coordinates

Hello,
I want to print the detect features keypoints with the FLANN based Matcher
Algorithm : http://docs.opencv.org/trunk/dc/dc3/t....
The search works fine and show as the tutorial the keypoints in red(all) and green(good).
I want only print the coordinates(x,y) named here ‘kp2’ of the second image(scene) but it doesn’t work.
Here is my code :

The number of match keypoints is good but the coordinates are wrong print(i,kp2[i].pt). I checked with the original image.
What I did wrong and if yes which lines I have to put to print only the match keypoints coordinates.
Thanks for all.